Research Article
Jan 1933
Water Pressures on Dams during Earthquakes
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VIEW THE REPLYPublication: Transactions of the American Society of Civil Engineers
Volume 98, Issue 2
Abstract
Formulas are derived for the changes of water pressures during an earthquake for the case of a straight dam with a vertical up-stream face. The vibrations in the earthquake are assumed horizontal in a direction perpendicular to the darn. A formula is obtained involving a series of sines (Equation (31)). This series, however, may be replaced with satisfactory approximation by a simpler formula (Equation (49)). The results are also expressed in the following manner: The pressures are the same as if a certain body of water were forced to move back and forth with the dam while the remainder of the reservoir is left inactive; Fig. 3 shows approximately the shape of this body of water. The influence of the dynamic action of the water is found to be neither excessively large nor negligible.
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© 1933 American Society of Civil Engineers.
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Published in print: Jan 1933
Published online: Feb 10, 2021
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H. M. Westergaard, M.ASCE
Prof. of Theoretical and Applied Mechanics, Univ. of Illinois, Urbana, Ill.; Cons. Engr., U. S. Bureau of Reclamation
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